Home / 1,189,780.57-1,641,917.00-645,916.48

Finding the Fourth Proportional to 1,189,780.57, 1,641,917.00 and 645,916.48

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Solution

The fourth proportional to 1,189,780.57, 1,641,917.00 and 645,916.48 is: 891,375.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,780.57 : 1,641,917.00 = 645,916.48 : x
  2. Step 2: Convert to fraction form
    1,189,780.57/1,641,917.00 = 645,916.48/x
  3. Step 3: Cross multiply
    1,189,780.57x = 1,641,917.00 × 645,916.48
  4. Step 4: Simplify right side
    1,189,780.57x = 1,060,541,244,331.37
  5. Step 5: Solve for x
    x = 1,060,541,244,331.37/1,189,780.57
  6. Step 6: Final answer
    x = 891,375.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.